1930885289 has 2 divisors, whose sum is σ = 1930885290. Its totient is φ = 1930885288.

The previous prime is 1930885273. The next prime is 1930885301. The reversal of 1930885289 is 9825880391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1874890000 + 55995289 = 43300^2 + 7483^2 .

It is a cyclic number.

It is not a de Polignac number, because 1930885289 - 2⁴ = 1930885273 is a prime.

It is a super-2 number, since 2×1930885289² = 7456635998553227042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1930885289.

It is not a weakly prime, because it can be changed into another prime (1930887289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965442644 + 965442645.

It is an arithmetic number, because the mean of its divisors is an integer number (965442645).

Almost surely, 2^1930885289 is an apocalyptic number.

It is an amenable number.

1930885289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1930885289 is an equidigital number, since it uses as much as digits as its factorization.

1930885289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The square root of 1930885289 is about 43941.8398454138. The cubic root of 1930885289 is about 1245.2374055207.

The spelling of 1930885289 in words is "one billion, nine hundred thirty million, eight hundred eighty-five thousand, two hundred eighty-nine".